The act of inserting an ear of corn (husk and all) into the anus of a willing sexual partner. You then donkey punch the individual and simultaneously rip the ear of corn out. If performed correctly, you should be left with a corn cob.
Old school street slang back when cats used to play the numbers in NYC particularly Harlem. It ensured that if any permutation of the number that you selected hit, you would be a winner.